Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nikolajj N Kolev, Rumen D Darakchiev, Krum A Semkov, Svetoslav C NakovfiledCriticalNikolajj N Kolev
Priority to BG8322688ApriorityCriticalpatent/BG45252A1/xx
Publication of BG45252A1publicationCriticalpatent/BG45252A1/xx